淮海经济区核心区污染排放对重点区域城市PM2.5贡献研究

Study on the impact of pollutant emissions from the core area of Huaihai Economic Zone on PM2.5 in the key regional cities

基于WRF-CMAQ空气质量模型,采用开关污染源排放的敏感性试验方法,定量分析了淮海经济区核心区污染排放对京津冀区域、“2+26”大气污染传输通道城市、汾渭平原地区和长三角区域PM2.5的贡献.结果表明,对京津冀区域,污染贡献比例最大值出现在10月份,同时对不同城市的贡献值在10%以内变化;对“2+26”大气传输通道城市,影响的时空差异变化明显,其中对聊城市、菏泽市和济南市的贡献值均超过了10%;对汾渭平原地区的贡献总体较弱,最大贡献值低于5%;对长三角区域,贡献值在不同城市间的时空差异变化明显.考虑到淮海经济区地处京津冀和长三角过渡地带,且对京津冀和长三角区域PM2.5影响较大,建议尽快将淮海经济区核心地区纳入国家大气污染重点控制区.

Based on the WRF-CMAQ air quality model,this paper uses the sensitivity test method of switching pollution source emissions to quantitatively analyze the pollution emission impact on the core area of Huaihai Economic Zone on the concentration of PM2.5 in the Beijing-Tianjin-Hebei cities where the“2+26”air pollution transmission channel cities,the Fen River-Wei River plain city agglomeration and the Yangtze River Delta region city agglomeration.The results showed that the largest contribution of pollution of the Beijing-Tianjin-Hebei cities,in October,and the contribution values varied within 10%for different cities.For the“2+26”air pollution transmission channel cities,the impacts varied greatly due to the spatial and temporal differences.The contribution values to Liaocheng City,Heze City and Jinan City were exceeded 10%.The contribution values to the Fen River-Wei River plain city agglomeration were generally weak,with the maximum value of less than 5%.For the Yangtze River Delta region,the contribution value varies significantly among different cities.Considering that the Huaihai Economic Zone is located in the transition zone of Beijing-Tianjin-Hebei and the Yangtze River Delta where had a greater impact on PM2.5 for both the Beijing-Tianjin-Hebei and Yangtze River Delta regions,it is recommended that the core area of the Huaihai Economic Zone should be included in the national key air pollution control area as soon as possible.